US6942049B2 - In-wheel motor for electric automobiles - Google Patents

In-wheel motor for electric automobiles Download PDF

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Publication number
US6942049B2
US6942049B2 US10/239,876 US23987602A US6942049B2 US 6942049 B2 US6942049 B2 US 6942049B2 US 23987602 A US23987602 A US 23987602A US 6942049 B2 US6942049 B2 US 6942049B2
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Prior art keywords
wheel
motor
electric vehicle
gear mechanism
drive motor
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US20040080223A1 (en
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Hiroshi Shimizu
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Japan Science and Technology Agency
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Japan Science and Technology Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
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    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
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    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
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    • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
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    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
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    • B60G2204/129—Damper mount on wheel suspension or knuckle
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    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
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    • B60G2204/14—Mounting of suspension arms
    • B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/30—In-wheel mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/30—Arrangement or mounting of transmissions in vehicles the ultimate propulsive elements, e.g. ground wheels, being steerable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
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    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present invention relates to an in-wheel motor to be mounted in an electric vehicle and, more particularly, to an in-wheel motor for an electric vehicle devised to be freely mountable regardless of the shape, structure, and characteristics of a drive motor thereof.
  • FIG. 1 is a sectional view showing the structure of a conventional in-wheel motor for an electric vehicle.
  • FIG. 1 shows an in-wheel motor that is configured such that the casing of a motor, which partially constitutes a drive mechanism, includes mounting means.
  • a drive mechanism 100 is integrally incorporated into a driving wheel (in-wheel-motor type).
  • the drive mechanism 100 is configured such that a drive motor 200 , a reduction gear mechanism 300 , and a brake 400 are integrated into a unit mechanism.
  • a tire 500 is mounted on the unit mechanism.
  • the drive motor 200 is a permanent-magnet-type AC motor.
  • a casing 210 of the drive motor 200 is composed of an outer frame 211 , an inner frame 212 , an end ring 213 , and an end plate 214 .
  • the outer frame 211 is cylindrical and includes a bracket portion 211 a , which is located towards the right in FIG. 1 .
  • the inner frame 212 is a cylindrical member that is concentrically disposed within the outer frame 211 , and includes a bracket portion 212 a , which is located at the right end in FIG. 1 .
  • the bracket portion 211 a and the bracket portion 212 a are joined via bolts, whereby the outer frame 211 and the inner frame 212 are joined.
  • the end ring 213 and the end plate 214 are attached via bolts to the left end face of the outer frame 211 .
  • a stator 220 which includes a stator core 221 and a coil 222 , is mounted on the inner circumferential surface of the outer frame 211 .
  • a cylindrical rotor 240 is rotatably mounted on the outer circumferential surface of the inner frame 212 via a motor bearing 230 .
  • the rotor 240 includes a rotor core 241 and a permanent magnet 242 .
  • a rotary block 250 is attached to the rotor core 241 via bolts.
  • a revolution speed detector 260 is attached to the left-hand end of the rotary block 250 .
  • a shaft 270 is serration-coupled to a right-hand portion of the rotary block 250 .
  • AC current is supplied to the coil 222 of the drive motor 200 through a cable 280 .
  • a revolution speed signal indicative of revolution speed detected by the revolution speed detector 260 is output through a cable 281 .
  • Support rings 290 and 291 formed in the outer frame 211 are fitted to corresponding fulcrums of a suspension mechanism, whereby the drive mechanism 100 is mounted onto a chassis of the electric vehicle.
  • the reduction gear mechanism 300 is a planetary gear mechanism and is adapted to transmit rotation of the shaft 270 to a wheel shaft 410 after reduction of speed.
  • a carrier 301 of the reduction gear mechanism 300 is serration-coupled to the wheel shaft 410 so as to transmit torque to the wheel shaft 410 while being allowed to move axially.
  • a wheel shaft tube 411 through which the wheel shaft 410 extends, is fixedly attached to the bracket portions 211 a and 212 a .
  • the reduction gear mechanism 300 is disposed in a space that is enclosed by the wheel shaft tube 411 and the bracket portion 212 a of the inner frame 212 .
  • a ring gear 302 of a planetary gear is formed on the inner surface of the inner frame 212 .
  • An end face of the shaft 270 and an end face of the wheel shaft 410 are pivoted by means of a pivot 412 .
  • the brake 400 is a hydraulic brake that uses a drum.
  • a wheel hub 420 is attached to the wheel shaft 410 via bolts.
  • a brake drum 430 and a disk wheel 505 of a wheel are attached to the wheel hub 420 via bolts.
  • a hub bearing 440 which serves as a wheel bearing, is interposed between the wheel shaft tube 411 and the wheel hub 420 .
  • a back plate of the brake 400 is fixedly attached to a flange portion of the wheel shaft tube 411 .
  • the tire 500 is mounted on a rim 510 of the disk wheel 505 .
  • the motor 200 when the motor 200 is activated to thereby rotate the rotor 240 , rotation of the rotor 240 is transmitted to the rotary block 250 and the shaft 270 and is then speed-reduced at the reduction gear mechanism 300 .
  • the speed-reduced rotation is transmitted to the wheel shaft 410 .
  • the tire 500 coupled to the wheel shaft 410 is rotated, whereby the electric vehicle moves.
  • FIG. 2 is a modified version of the drive mechanism 100 shown in FIG. 1 .
  • this modified drive mechanism employs a drive motor 200 having a long axial dimension and a short radial dimension. Since the drive motor 200 has a short radial dimension, centrifugal force induced by the rotor 240 is small, and thus the drive motor 200 can be a high-speed motor.
  • the reduction gear mechanism 300 is designed to provide a large reduction gear ratio; thus, the outside diameter of the reduction gear mechanism 300 is greater than the inside diameter of the stator 220 . Also in this embodiment, the ring gear 302 of the reduction gear mechanism 300 is formed on the inner surface of the inner frame 212 .
  • Still another drive mechanism is disclosed in U.S. Pat. No. 5,087,229.
  • This drive mechanism includes a drive motor, a reduction gearset, a brake, and a tire as well as a steering knuckle, a ball joint mechanism, etc. which are provided integrally with a motor wheel for supporting the motor wheel.
  • reference numeral 10 denotes a motor wheel
  • reference numeral 12 denotes a steering knuckle
  • reference numeral 14 denotes a ball joint mechanism
  • reference numeral 16 denotes a motor wheel support element
  • reference numeral 18 denotes a vehicle shock tower
  • reference numeral 20 denotes a frame member
  • reference numeral 22 denotes bolts
  • reference numeral 24 denotes a mounting clamp
  • reference numeral 26 denotes a McPherson assembly
  • reference numeral 28 denotes a plate
  • reference numeral 30 denotes a nut
  • reference numeral 32 denotes a lower control arm
  • reference numeral 34 denotes a sway bar
  • reference numeral 36 denotes a ball joint mechanism
  • reference numeral 38 denotes a link
  • reference numeral 40 denotes a hub
  • reference numeral 42 denotes bolts
  • reference numeral 44 denotes a motor housing
  • reference numeral 46 denotes bolts
  • the support rings 290 and 291 which are used for mounting the motors onto respective chassis, are formed integrally with the casing 210 .
  • Required motor characteristics such as low speed or high speed, or low torque or high torque, depend on the size of a tire and vehicle characteristics. The size and shape of a motor vary depending on the required motor characteristics.
  • the positions of the support rings 290 and 291 which are used for mounting the motor onto a chassis, vary accordingly in relation to the casing 210 and to the tire 500 .
  • an applicable in-wheel motor is limited to that having a specific mounting section; i.e., a mounting section that satisfies a specific positional relation between the mounting section and a wheel.
  • a specific mounting section i.e., a mounting section that satisfies a specific positional relation between the mounting section and a wheel.
  • the desired application or replacement may be infeasible if the positions of the support rings 290 and 291 are incompatible.
  • the axial length of a motor casing changes depending on motor characteristics, and the position of the mounting section changes accordingly.
  • an in-wheel motor has been selected according to the position of a mounting section, not according to motor characteristics, thereby narrowing the range of selection and thus raising difficulty in design and affecting convenience of use.
  • An object of the present invention is to solve the above-mentioned problems in a conventional in-wheel motor and to provide an in-wheel motor for an electric vehicle allowing a drive motor to be freely mounted onto a chassis irrespective of the shape, structure, and characteristics of the drive motor as well as allowing free selection of a reduction gear ratio without need to replace a drive motor.
  • the present invention provides the following in-wheel motors for an electric vehicle.
  • An in-wheel motor for an electric vehicle comprises a drive motor, a reduction gear mechanism, a wheel bearing, and a mechanical brake and serves as a drive apparatus for an electric vehicle.
  • the in-wheel motor is characterized in that the drive motor includes a casing which houses a rotor and a stator; the reduction gear mechanism comprises a planetary gear mechanism; a wheel bearing is fixedly attached to the outer circumference of an end portion of a housing, which houses a wheel shaft coupled to an output element of the planetary gear mechanism; mounting blocks having engagement means are provided respectively at upper and lower outside portions of the casing; and attachments are attached to the corresponding mounting blocks and joined to corresponding joint mechanisms, which are movably coupled to a suspension mechanism.
  • the attachments are characterized in that a line connecting the centers of rotation of the joint mechanisms, which are fixedly attached to the corresponding attachments, forms a king pin angle with respect to the center axis of a wheel.
  • An in-wheel motor for an electric vehicle comprises a drive motor, a reduction gear mechanism, a wheel bearing, and a mechanical brake and serves as a drive apparatus for an electric vehicle.
  • the in-wheel motor is characterized in that the drive motor includes a casing which houses a rotor and a stator; the reduction gear mechanism comprises a planetary gear mechanism; a wheel bearing is fixedly attached to the outer circumference of an end portion of a housing, which houses a wheel shaft coupled to an output element of the planetary gear mechanism; the mechanical brake is a drum brake or a disk brake; the planetary gear mechanism is housed within the housing, and an input shaft of the planetary gear mechanism is spline-coupled to a rotary shaft of the drive motor; and the housing is attached to the casing via bolts.
  • the planetary gear mechanism is configured such that a partition is provided within a gear chamber for controlling stirring of lubrication oil.
  • a rotational-position detector is disposed on the side of the rotor opposite the output side of the rotor, and the rotational-position detector is a resolver.
  • the drive motor is a 6-phase synchronous AC motor.
  • the joint mechanism is a ball joint mechanism or a spherical joint mechanism.
  • the configuration of the present invention is characterized in that means for mounting an in-wheel motor comprises the mounting blocks provided on the casing of the in-wheel motor; the joint mechanisms, which are movably coupled to a suspension mechanism; and the attachments, which are attached to the corresponding mounting blocks and joined to the corresponding joint mechanisms.
  • the configuration of the present invention is characterized in that means for attaching the above-mentioned attachments to the mounting blocks is in common among various attachments and that other specifications of the attachments are modified as appropriate so as to be compatible with various applications.
  • the configuration of the present invention is characterized in that the above-mentioned mounting blocks are provided respectively at an upper portion and a lower portion of the casing and that the above-mentioned attachments are provided in correspondence with the mounting blocks.
  • means for mounting an in-wheel motor comprises a mounting block provided on an upper portion of the casing; a support portion of an upper arm, which partially constitutes the attachment, the support portion being coupled to a joint mechanism; a mounting block provided on a lower portion of the casing; and a support portion of a lower arm, which partially constitutes the attachment, the support portion being coupled to a joint mechanism.
  • the configuration of the present invention is characterized in that the coupling surface of each mounting block and the coupling surface of a coupling portion of each arm, which partially constitutes the attachment, can abut each other at any mounting angle.
  • the configuration of the present invention is characterized in that the planetary gear mechanism is housed within the housing while a ring gear is provided on the inner surface of the housing; the input shaft of the planetary gear mechanism is spline-coupled to the rotary shaft of the drive motor; and the housing is attached to the casing via bolts.
  • the configuration of the present invention is characterized in that the partition for controlling stirring of lubrication oil is provided between the end face of the planetary gear mechanism and a bracket portion of the motor casing.
  • the upper and lower mounting blocks are formed on an in-wheel motor body such that coupling surfaces of the blocks are common among different types of vehicles. While coupling specifications are common among various upper arms and among various lower arms, other specifications of the upper and lower arms are modified according to, for example, mounting length and mounting height, whereby the mounting blocks are coupled to a suspension mechanism by means of the upper and lower arms.
  • a steering tie rod is coupled to either the upper arm or the lower arm.
  • FIG. 1 is a longitudinal sectional view of a conventional in-wheel motor for an electric vehicle
  • FIG. 2 is a longitudinal sectional view of another conventional in-wheel motor for an electric vehicle
  • FIG. 3 is a longitudinal sectional view of still another conventional in-wheel motor for an electric vehicle
  • FIG. 4 is a schematic view showing means for mounting an in-wheel motor in a drive system of an electric vehicle to which the present invention is applied;
  • FIG. 5 is a longitudinal sectional view of an in-wheel motor for an electric vehicle of the present invention.
  • FIG. 4 exemplifies an in-wheel motor of the present invention and means for mounting the in-wheel motor while other structural features are omitted.
  • FIG. 5 is a longitudinal sectional view of the in-wheel motor according to the present invention.
  • a drive motor 1200 in a drive mechanism 1100 is a permanent-magnet-type AC motor, particularly a 6-phase synchronous AC motor.
  • a casing 1210 of the drive motor 1200 includes an outer frame 1211 , an end ring 1213 , and an end plate 1214 .
  • the outer frame 1211 is cylindrical and includes a bracket portion 1211 a , which is located at the right-hand side thereof in FIG. 5.
  • a stator 1220 which is composed of a stator core 1221 and a coil 1222 , is mounted on the inner circumferential surface of the outer frame 1211 . In order to reduce idle space, the number of poles of the coil 1222 is six, and the coil 1222 uses thin wires. Also, in order to reduce the axial length of the drive motor 1200 , coil ends are mechanically compressed from opposite sides. Reference letters A and B denote attachments.
  • a rotor 1240 includes a rotor core 1241 and a permanent magnet 1242 .
  • Rotary shaft blocks 1251 and 1252 which constitute a rotary shaft of the drive motor 1200 , are attached to the rotor core 1241 via bolts.
  • a shaft portion 1251 a of the rotary shaft block 1251 is supported rotatably by means of a motor bearing 1231 , which is fixedly attached to the end ring 1213 .
  • a revolution speed detector 1260 such as a resolver is attached to the left-hand end of the shaft portion 1251 a .
  • a shaft portion 1252 a of the rotary shaft block 1252 is supported rotatably by means of a motor bearing 1232 , which is fixedly attached to the bracket portion 1211 a of the outer frame 1211 .
  • Serrations are formed on the inner surface of the shaft portion 1252 a , so that the shaft portion 1252 a is spline-coupled to an input shaft 1270 of a reduction gear mechanism 1300 .
  • a housing 1411 houses the reduction gear mechanism 1300 .
  • a wheel bearing i.e., a hub bearing 1440 , is fixedly attached to the outer circumference of a wheel shaft tube portion 1411 a of the housing 1411 .
  • the housing 1411 is attached via bolts 1215 to the bracket portion 1211 a of the outer frame 1211 of the drive motor 1200 .
  • a revolution speed signal indicative of revolution speed detected by the revolution speed detector 1260 is output via a cable 1281 .
  • the reduction gear mechanism 1300 is implemented by means of a planetary gear mechanism and adapted to reduce the revolution speed of the input shaft 1270 to thereby transmit the reduced revolution speed to a wheel shaft 1410 .
  • a partition 1302 is provided within a gear chamber for controlling stirring of lubrication oil.
  • the planetary gear mechanism may be of a single stage or a plurality of stages.
  • a ring gear 1303 of the planetary gear mechanism is provided on the inner surface of the housing 1411 .
  • a carrier 1301 is spline-coupled to the wheel shaft 1410 so as to transmit torque to the wheel shaft 1410 while being allowed to move axially.
  • the wheel shaft 1410 is disposed within the wheel shaft tube portion 1411 a of the housing 1411 .
  • a brake 1400 is a mechanical drum brake.
  • a back plate 1403 of the brake 1400 is fixedly attached to an end face of the housing 1411 .
  • a wheel hub 1420 is attached to the wheel shaft 1410 via bolts.
  • a brake drum 1430 and a disk wheel 1505 of a wheel are attached to the wheel hub 1420 via bolts.
  • a hub bearing 1440 is interposed between the wheel shaft tube portion 1411 a and the wheel hub 1420 .
  • the brake 1400 operates in the following manner. As hydraulic pressure increases as a result of a brake pedal being stepped on, a wheel cylinder 1401 causes brake shoes 1402 to be expanded, so that the brake shoes 1402 come into contact with the brake drum 1430 for braking.
  • a tire 1500 is mounted on a rim 1510 of the disk wheel 1505 .
  • the drive mechanism 1100 when the drive motor 1200 is activated to thereby rotate the rotor 1240 , rotation of the rotor 1240 is transmitted to the rotary shaft block 1252 and the input shaft 1270 of the reduction gear mechanism 1300 and is then speed-reduced at the reduction gear mechanism 1300 .
  • the speed-reduced rotation is transmitted to the wheel shaft 1410 .
  • the tire 1500 is rotated via the wheel hub 1420 coupled to the wheel shaft 1410 , whereby the electric vehicle moves.
  • An upper mounting block 800 and a lower mounting block 810 are integrally formed on the casing 1210 of the drive motor at an upper portion of the casing 1210 and at a lower portion of the casing 1210 , respectively.
  • the upper mounting block 800 is formed on an upper portion of the casing 1210 and assumes a substantially platelike shape.
  • Coupling surfaces 801 a and 801 b are formed on the corresponding end faces of the substantially platelike mounting block 800 , the end faces extending along the longitudinal direction of the casing 1210 .
  • a plurality of female screw portions (not shown) are formed on each of the coupling surfaces 801 a and 801 b.
  • the lower mounting block 810 is formed on a lower portion of the casing 1210 and assumes a substantially platelike shape. Coupling surfaces 811 a and 811 b are formed on the corresponding end faces of the substantially platelike mounting block 810 , the end faces extending along the longitudinal direction of the casing 1210 . A plurality of female screw portions are formed on each of the coupling surfaces 811 a and 811 b . That is, the upper mounting block 800 has the coupling surfaces 801 a and 801 b , to which an upper arm 600 is attached, and the lower mounting block 810 has the coupling surfaces 811 a and 811 b , to which a lower arm 700 is attached.
  • the shape of the coupling surfaces, the angle of the coupling surfaces with respect to a horizontal plane and the like can be designed arbitrarily.
  • the angles of the coupling surfaces determine the angles of coupling portions 601 a and 601 b of the upper arm 600 , which abut the upper mounting block 800 , and the angles of coupling portions 701 a and 701 b of the lower arm 700 , which abut the lower mounting block 810 .
  • Reference numerals 604 a , 604 b , 704 a , and 704 b denote locking screws to be engaged with female screws formed in the coupling surfaces.
  • the upper arm 600 includes a support portion 603 , arm portions 602 a and 602 b , and the coupling portions 601 a and 601 b.
  • the coupling portions 601 a and 601 b are formed so as to abut the coupling surfaces 801 a and 801 b , respectively, of the upper mounting block 800 .
  • the arm portions 602 a and 602 b are shaped so as to extend between the support portion 603 and the coupling portions 601 a and 601 b .
  • the shape of the arm portions 602 a and 602 b must be determined so as to exhibit sufficient strength and rigidity to endure the weight of the vehicle and an impact force transmitted from the wheel to the support portion 603 and a support portion 703 , which will be described later.
  • a ball joint mechanism 612 or a spherical joint mechanism is coupled to the support portion 603 .
  • the ball joint mechanism 612 assumes a known structure.
  • a taper shaft 609 of the ball joint mechanism 612 is inserted into a through-hole 608 formed in the support portion 603 and locked by means of a nut 610 .
  • An upper arm of an unillustrated suspension mechanism is attached to a suspension attachment portion 605 of the ball joint mechanism 612 .
  • a coupling 613 to which a steering tie rod is coupled, is provided on the support portion 603 and located away from the through-hole 608 .
  • the tie rod coupling 613 may be provided on the lower arm 700 , which will be described later.
  • the shaft 609 is inclined at a predetermined angle with respect to the horizontal plane of the support portion 603 .
  • the king pin angle ⁇ is determined in view of steering stability of a vehicle and the like.
  • the lower arm 700 includes a support portion 703 , arm portions 702 a and 702 b , and the coupling portions 701 a and 701 b .
  • the support portion 703 assumes a flat-plate shape and is disposed horizontally while being located away from the bottom surface of the lower mounting block 810 of the casing 1210 .
  • the coupling portions 701 a and 701 b are formed so as to abut the coupling surfaces 811 a and 811 b , respectively, of the lower mounting block 810 .
  • the arm portions 702 a and 702 b are shaped so as to extend between the support portion 703 and the coupling portions 701 a and 701 b .
  • the shape of the arm portions 702 a and 702 b must be determined so as to exhibit sufficient strength and rigidity to endure the weight of the vehicle and an impact force transmitted from the wheel to the support portion 703 .
  • the ball joint mechanism 712 assumes a known structure.
  • a taper shaft 709 of the ball joint mechanism 712 is inserted into a through-hole 708 formed in the support portion 703 and locked by means of a nut 710 .
  • a suspension attachment portion 705 of the ball joint mechanism 712 is attached to a lower arm of a suspension mechanism (not shown). As shown in FIG. 5 , the shaft 709 is inclined at a predetermined angle with respect to the horizontal plane of the support portion 703 .
  • the shaft 709 of the ball joint mechanism 712 is provided such that the axis thereof is aligned with the axis of the shaft 609 of the ball joint mechanism 612 .
  • this alignment feature is employed in view of steering stability of a vehicle and the like.
  • the upper mounting block 800 having the coupling surfaces 801 a and 801 b which are common among different types of vehicles and the lower mounting block 810 having the coupling surfaces 811 a and 811 b which are common among different types of vehicles are formed on the casing 1210 of the drive motor;
  • the upper arm 600 which includes the coupling portions 601 a and 601 b which abut the coupling surfaces 801 a and 801 b which are common among different types of vehicles, the support portion 603 which is coupled to a suspension mechanism, and the arm portions 602 a and 602 b which extend between the support portion 603 and the coupling portions 601 a and 601 b —is fixedly attached to the coupling surfaces 801 a and 801 b of the upper mounting block 800 by use of the locking screws 604 a and 604 b or the like; and
  • the lower arm 700 which includes the coupling portions 701 a and 701 b which abut the coupling surfaces 811 a and 811 b which are common among different types of vehicles, the support portion 703 which is coupled to the suspension mechanism, and the arm portions 702 a and 702 b which extend between the support portion 703 and the coupling portions 701 a and 701 b —is fixedly attached to the coupling surfaces 811 a and 811 b of the lower mounting block 810 by use of the locking screws 704 a and 704 b or the like.
  • the present invention is characterized in that, in the in-wheel motor described above in (1), (2), and (3), the support portions 603 and 703 of the arms 600 and 700 are coupled to the suspension mechanism via the ball joint mechanisms 612 and 712 or respective spherical joint mechanisms.
  • the present invention is characterized in that the ring gear 1303 of the reduction gear mechanism 1300 , which reduces the revolution speed of the drive motor and transmits the reduced revolution speed to the wheel, is formed on the inner surface of the housing 1411 , which is a member separate from the motor casing 1210 ; the input shaft 1270 of the reduction gear mechanism 1300 is spline-coupled to the shaft portion 1252 a of the drive motor; and the housing 1411 is removably attached to the casing 1210 via bolts.
  • the present invention yields the following effects.
  • Only the upper and lower mounting blocks are formed on an in-wheel motor body such that coupling surfaces of the blocks are common among different types of vehicles.
  • a plurality of types of upper and lower arms are prepared such that, while coupling specifications are common among the upper arms and among the lower arms, other specifications of the upper and lower arms are modified according to, for example, mounting height.
  • An upper arm and a lower arm are selected from the prepared upper and lower arms as appropriate for individual applications.
  • the upper and lower mounting blocks are coupled to a suspension mechanism by means of the thus-selected upper and lower arms.
  • the present invention allows a wheel drive section including a speed reduction mechanism to be separated from a drive motor. Therefore, through change in the gear ratio of a reduction gear apparatus, the revolution speed of a wheel and driving torque can be changed, whereby tire diameter can be selected freely without need to replace a drive motor.
  • the in-wheel motor of the present invention can cope with changes in specifications and performance of a vehicle through replacement of units and is favorably used in an electric vehicle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US10/239,876 2001-02-19 2001-12-26 In-wheel motor for electric automobiles Expired - Fee Related US6942049B2 (en)

Applications Claiming Priority (3)

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JP2001-041698 2001-02-19
JP2001041698A JP3440082B2 (ja) 2001-02-19 2001-02-19 電気自動車用インホイールモーター
PCT/JP2001/011434 WO2002066280A1 (en) 2001-02-19 2001-12-26 In-wheel motor for electric automobiles

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US20040080223A1 US20040080223A1 (en) 2004-04-29
US6942049B2 true US6942049B2 (en) 2005-09-13

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EP (2) EP1362736B1 (zh)
JP (1) JP3440082B2 (zh)
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WO (1) WO2002066280A1 (zh)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060087182A1 (en) * 2004-08-25 2006-04-27 Toyota Jidosha Kabushiki Kaisha Housing structure of in-wheel motor
US20070257570A1 (en) * 2003-08-22 2007-11-08 Magnet-Motor Gesellschaft Fuer Magnetmotorische Te Electric Driving Unit for a Vehicle
US20080053726A1 (en) * 2006-08-31 2008-03-06 American Axle & Manufacturing, Inc. Electric wheel motor assembly
US20080066980A1 (en) * 2006-09-20 2008-03-20 James Harry K Direct drive electric traction motor
US20080093133A1 (en) * 2004-05-17 2008-04-24 Toyota Jidosha Kabushiki Kaisha Mounting Structure Of Part
US20080190677A1 (en) * 2005-07-22 2008-08-14 Roland Muller Drive unit for a motor vehicle
US7552787B1 (en) * 2005-10-07 2009-06-30 Williams Kevin R Energy recoverable wheel motor
US20090166111A1 (en) * 2006-01-27 2009-07-02 Toyota Jidosha Kabushiki Kaisha In-wheel motor
US20090215569A1 (en) * 2008-02-26 2009-08-27 Hitachi Construction Machinery Co., Ltd. Travel Assembly
US7726426B2 (en) * 2003-02-21 2010-06-01 Lockheed Martin Corporation Hub drive and method of using same
US20100200323A1 (en) * 2007-09-12 2010-08-12 Fumihiro Egawa Work vehicle
CN101549636B (zh) * 2009-05-15 2013-02-20 沈阳罗特自动化技术有限公司 重载伺服车轮组
US8550192B2 (en) 2003-02-21 2013-10-08 Lockheed Martin Corporation Payload module for mobility assist
US20130292994A1 (en) * 2011-01-21 2013-11-07 Ryou Yukishima In-wheel motor drive device
US8672065B2 (en) 2003-02-21 2014-03-18 Lockheed Martin Corporation Vehicle having an articulated suspension and method of using same
US20140139009A1 (en) * 2012-11-16 2014-05-22 Deere & Company Wheel hub with electric motor
US20140159468A1 (en) * 2011-08-12 2014-06-12 E-Traction Europe B.V. In-wheel motor with brake
US20140232175A1 (en) * 2011-09-27 2014-08-21 Ken Yamamoto In-wheel motor drive assembly
US8839891B2 (en) 2003-02-21 2014-09-23 Lockheed Martin Corporation Multi-mode skid steering
US20190232747A1 (en) * 2016-10-17 2019-08-01 Ntn Corporation In-wheel motor drive device
US11548337B2 (en) * 2016-09-30 2023-01-10 Ntn Corporation In-wheel motor drive device
US20230012737A1 (en) * 2021-07-13 2023-01-19 Hyundai Mobis Co., Ltd. Wheel structure including hub bearing and vehicle including the same
EP4163139A4 (en) * 2020-06-08 2024-07-31 Ntn Toyo Bearing Co Ltd VEHICLE POWER DEVICE AND POWER GENERATOR VEHICLE BEARING
WO2024175197A1 (en) * 2023-02-23 2024-08-29 Elaphe Propulsion Technologies Ltd. Symmetric in-wheel electric motor design

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040263099A1 (en) * 2002-07-31 2004-12-30 Maslov Boris A Electric propulsion system
US20050127856A1 (en) * 2002-07-31 2005-06-16 Wavecrest Laboratories Low-voltage electric motors
US20050052080A1 (en) * 2002-07-31 2005-03-10 Maslov Boris A. Adaptive electric car
JP4639572B2 (ja) * 2002-12-13 2011-02-23 トヨタ自動車株式会社 電気自動車
JP2005104216A (ja) * 2003-09-29 2005-04-21 Ntn Corp 電動式車輪駆動装置
JP4113506B2 (ja) * 2003-09-30 2008-07-09 トヨタ自動車株式会社 車輪支持装置
US7703780B2 (en) 2003-09-30 2010-04-27 Toyota Jidosha Kabushiki Kaisha Wheel supporting apparatus improving ride comfort of vehicle
CN1298561C (zh) * 2004-03-12 2007-02-07 清华大学 用于轻型电动车的电机驱动装置
JP4694148B2 (ja) * 2004-05-28 2011-06-08 トヨタ自動車株式会社 モータの部品
JP2006027529A (ja) * 2004-07-20 2006-02-02 Toyota Motor Corp 車両用電動駆動装置及びこれを備えた自動車。
DE102004051004B3 (de) 2004-10-20 2006-06-01 Bayerische Motoren Werke Ag Längsdynamiksteuersystem in Kraftfahrzeugen
JP2006188153A (ja) * 2005-01-06 2006-07-20 Toyota Motor Corp インホイールモータ
JP4799199B2 (ja) * 2005-02-16 2011-10-26 Ｎｔｎ株式会社 インホイールモータ駆動装置
JP2007022386A (ja) 2005-07-19 2007-02-01 Ntn Corp 電動式車輪駆動装置
JP4894215B2 (ja) 2005-10-05 2012-03-14 日産自動車株式会社 インホイールドライブユニット
US7579738B2 (en) * 2005-10-31 2009-08-25 Greenee Energy Inc. Multi-phase electrical motor for use in a wheel
DE102006030502A1 (de) * 2006-07-01 2008-01-03 Voith Patent Gmbh Walzenantriebsende und Verfahren zur Montage einer Antriebsvorrichtung an einem Antriebszapfen
JP4501909B2 (ja) * 2006-08-11 2010-07-14 トヨタ自動車株式会社 インホイールモータ構造
ITTO20060894A1 (it) 2006-12-15 2008-06-16 Oto Melara Spa Ruota motorizzata per un veicolo militare
US8387381B2 (en) * 2008-01-31 2013-03-05 Hitachi, Ltd. Electric booster
JP4877296B2 (ja) 2008-08-21 2012-02-15 トヨタ自動車株式会社 駆動装置およびその制御装置
JP4806461B2 (ja) * 2008-09-26 2011-11-02 三洋電機株式会社 電動モータ及び電動車輌
IT1392130B1 (it) * 2008-11-03 2012-02-22 Eden Technology Srl Dispositivo di sterzatura automatica per carrelli semoventi di sollevamento e trasporto manufatti.
JP5141614B2 (ja) * 2009-03-25 2013-02-13 アイシン精機株式会社 インホイールモータユニット
JP4779039B2 (ja) * 2009-07-02 2011-09-21 株式会社福本ボデー 自走式掃除機
DE102009038423A1 (de) 2009-08-21 2011-03-10 Audi Ag Vorrichtung zum Verstellen von Sturz und/oder Spur
DE102009038928A1 (de) 2009-08-26 2010-11-04 Schaeffler Technologies Gmbh & Co. Kg Elektromotor
DE102010049610A1 (de) * 2009-12-07 2011-06-09 Schaeffler Technologies Gmbh & Co. Kg Elektrische Antriebseinheit für ein Kraftfahrzeug
WO2011118696A1 (ja) 2010-03-25 2011-09-29 Ntn株式会社 インホイールモータ駆動装置
JP2011240765A (ja) * 2010-05-17 2011-12-01 Ntn Corp インホイールモータ駆動装置
DE102010040763A1 (de) * 2010-09-14 2012-03-15 Bayerische Motoren Werke Aktiengesellschaft Einzelradaufhängung eines nicht lenkbaren angetriebenen Rades eines zweispurigen Fahrzeugs
EP2664487A4 (en) * 2011-01-11 2018-01-24 JTEKT Corporation In-wheel motor driving device
JP2012171428A (ja) * 2011-02-18 2012-09-10 Ntn Corp インホイールモータ駆動装置
KR101301754B1 (ko) * 2011-05-23 2013-08-29 현대모비스 주식회사 인휠 구동장치
KR20120137030A (ko) * 2011-06-10 2012-12-20 현대모비스 주식회사 제동형 인휠 구동장치
JP2013023202A (ja) * 2011-07-15 2013-02-04 Tadashi Takano 電動車輪
CN103534121B (zh) * 2011-08-02 2016-02-10 日本精工株式会社 轮毂轴承、减速机构以及轮内马达
EP2758259A1 (de) * 2011-09-22 2014-07-30 Schaeffler Technologies GmbH & Co. KG Radaufhängungseinrichtung mit darin lenkbar angebundenem radlagerträger und integriertem radantriebsmotor
CN104025430B (zh) * 2011-12-27 2016-08-24 奥田胜司 车轴发电机
JP2013163401A (ja) * 2012-02-09 2013-08-22 Nsk Ltd 駆動ユニット
DE102012008016A1 (de) * 2012-04-24 2013-10-24 Daimler Ag Rotorträger für eine elektrische Maschine, Stützelement für einen Rotorträger und Verfahren zur Herstellung eines Stützelements
GB2487872B (en) * 2012-05-09 2012-12-26 Protean Electric Ltd An electric motor or generator system
KR101903971B1 (ko) * 2012-07-11 2018-10-04 현대모비스 주식회사 인휠 구동장치
JP6195432B2 (ja) * 2012-10-03 2017-09-13 Ntn株式会社 インホイールモータ駆動装置
CN103001389B (zh) * 2012-12-17 2015-12-09 无锡浜马通用机械制造有限公司 电动自行车用中置电机
EP3017988B1 (en) 2013-07-04 2018-03-21 Nissan Motor Co., Ltd Motor power feed wiring routing structure for in-wheel motor driven wheel
JP2015089188A (ja) * 2013-10-29 2015-05-07 Ntn株式会社 インホイールモータおよびインホイールモータ駆動装置
JP6313610B2 (ja) * 2014-02-27 2018-04-18 Ntn株式会社 インホイールモータ駆動装置とダンパとの連結構造およびこの連結構造を備えるサスペンション装置
FR3019106A1 (fr) * 2014-03-25 2015-10-02 Michelin & Cie Moyeu motorise pour un vehicule a traction electrique
FR3021910B1 (fr) * 2014-06-05 2018-12-07 Valeo Systemes De Controle Moteur Ensemble stator pour moteur-roue et son support-fusee.
JP6341768B2 (ja) * 2014-06-11 2018-06-13 株式会社 神崎高級工機製作所 電動モータ駆動装置
JP6331770B2 (ja) * 2014-06-27 2018-05-30 日産自動車株式会社 インホイールモータ転舵輪のサスペンション装置
EP3162607B1 (en) * 2014-06-27 2019-03-13 Nissan Motor Co., Ltd Unsprung power supply apparatus for in-wheel motor vehicle
US9624998B2 (en) * 2014-07-30 2017-04-18 Tenneco Automotive Operating Company Inc. Electromagnetic flywheel damper and method therefor
JP6490376B2 (ja) * 2014-09-26 2019-03-27 株式会社村上商会 電気自動車の駆動システム
US9550402B2 (en) * 2015-04-13 2017-01-24 Reyco Granning, Llc Independent front suspension module for installation into a vehicle
JP6125066B1 (ja) * 2016-03-08 2017-05-10 Ntn株式会社 インホイールモータ駆動装置
JP6334590B2 (ja) * 2016-04-06 2018-05-30 Ntn株式会社 インホイールモータ駆動装置
JP2017185912A (ja) 2016-04-06 2017-10-12 Ntn株式会社 インホイールモータ動力線の配線構造およびインホイールモータ駆動装置
CN109073009B (zh) * 2016-04-15 2021-06-15 美蓓亚三美株式会社 车轮模块
JP6757630B2 (ja) * 2016-08-30 2020-09-23 Ntn株式会社 インホイールモータ駆動装置
JP6706563B2 (ja) * 2016-09-23 2020-06-10 Ntn株式会社 インホイールモータ駆動装置用サスペンション構造
JP6786354B2 (ja) * 2016-10-31 2020-11-18 Ntn株式会社 インホイールモータ駆動装置
KR101841009B1 (ko) * 2016-11-01 2018-03-23 현대모비스 주식회사 인휠 구동장치
JP7029287B2 (ja) * 2016-12-26 2022-03-03 Ntn株式会社 インホイールモータ駆動装置
CN106915391B (zh) * 2017-02-21 2019-04-05 中国科学院合肥物质科学研究院 一种基于sick激光传感器的茎秆类作物高度动态识别平台
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DE102021202447A1 (de) * 2021-03-12 2022-09-15 Robert Bosch Gesellschaft mit beschränkter Haftung Antriebsbaugruppe für ein Fahrzeug
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Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462667A (en) * 1967-03-02 1969-08-19 Pratt Precision Hydraulics Ltd Six-phase electric stepping motor with control system including logic circuitry
US4571822A (en) * 1982-12-01 1986-02-25 Hitachi, Ltd. Apparatus for inserting coils into stator core slots
US4798260A (en) * 1986-03-27 1989-01-17 Kubota, Ltd. Steering apparatus for a front wheel drive tractor
US5087229A (en) * 1991-05-06 1992-02-11 General Motors Corporation Independently suspended steerable motor wheel apparatus
US5156579A (en) * 1990-11-20 1992-10-20 Aisin Aw Co., Ltd. Lubricating device for a vehicle motor
US5163528A (en) * 1990-11-20 1992-11-17 Aisun Aw Co., Ltd. Wheel motor provided with a reduction gear
US5180180A (en) * 1991-04-24 1993-01-19 Aisin Aw Co., Ltd. Wheel supporting apparatus
JPH05116546A (ja) * 1991-10-29 1993-05-14 Tokyo Electric Power Co Inc:The ホイールモータ
JPH05116545A (ja) * 1991-10-29 1993-05-14 Tokyo Electric Power Co Inc:The 電気自動車用の電動輪
US5382854A (en) * 1992-07-29 1995-01-17 Kabushikikaisha Equos Research Electrical motor drive apparatus with planetary gearing
JPH0881430A (ja) 1994-04-18 1996-03-26 Ciba Geigy Ag 新規δ−アミノ−γ−ヒドロキシ−ω−アリールアルカン酸アミド
JPH1189178A (ja) 1997-09-08 1999-03-30 Meidensha Corp 電気自動車用インホィールモータ
JPH11115507A (ja) 1997-10-14 1999-04-27 Mitsubishi Automob Eng Co Ltd 電気自動車のモータ取付構造
JPH11170831A (ja) 1997-12-09 1999-06-29 Araco Corp 電気自動車用懸架装置
JP2000052788A (ja) 1998-08-06 2000-02-22 Araco Corp 電動車両
US6148945A (en) * 1998-05-29 2000-11-21 Carraro S.P.A. Steering drive axle
US6225775B1 (en) * 1998-10-01 2001-05-01 Plaset Spa Synchronous electric motor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2769323B2 (ja) * 1988-06-29 1998-06-25 アイシン・エィ・ダブリュ株式会社 減速機付モータ駆動装置及び電動車両
JP2545733B2 (ja) * 1993-09-17 1996-10-23 環境庁国立環境研究所長 電気自動車の駆動装置
US5472059A (en) * 1994-02-15 1995-12-05 Dana Corporation Wheel end assembly
JP3526093B2 (ja) * 1994-12-09 2004-05-10 本田技研工業株式会社 減速機付モータの製造方法
JPH09109696A (ja) * 1995-10-23 1997-04-28 Honda Motor Co Ltd ホイールモータユニットおよび電動車両
US5906249A (en) * 1995-12-22 1999-05-25 Orion-yhtyma Oy Drive system of a drive wheel
JP3814922B2 (ja) * 1997-03-21 2006-08-30 松下電器産業株式会社 マグネットモータ
JP3772638B2 (ja) * 2000-05-09 2006-05-10 日産自動車株式会社 ホイールインモータ車のモータ搭載構造

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462667A (en) * 1967-03-02 1969-08-19 Pratt Precision Hydraulics Ltd Six-phase electric stepping motor with control system including logic circuitry
US4571822A (en) * 1982-12-01 1986-02-25 Hitachi, Ltd. Apparatus for inserting coils into stator core slots
US4798260A (en) * 1986-03-27 1989-01-17 Kubota, Ltd. Steering apparatus for a front wheel drive tractor
US5156579A (en) * 1990-11-20 1992-10-20 Aisin Aw Co., Ltd. Lubricating device for a vehicle motor
US5163528A (en) * 1990-11-20 1992-11-17 Aisun Aw Co., Ltd. Wheel motor provided with a reduction gear
US5180180A (en) * 1991-04-24 1993-01-19 Aisin Aw Co., Ltd. Wheel supporting apparatus
US5087229A (en) * 1991-05-06 1992-02-11 General Motors Corporation Independently suspended steerable motor wheel apparatus
JPH05116545A (ja) * 1991-10-29 1993-05-14 Tokyo Electric Power Co Inc:The 電気自動車用の電動輪
JPH05116546A (ja) * 1991-10-29 1993-05-14 Tokyo Electric Power Co Inc:The ホイールモータ
US5382854A (en) * 1992-07-29 1995-01-17 Kabushikikaisha Equos Research Electrical motor drive apparatus with planetary gearing
JPH0881430A (ja) 1994-04-18 1996-03-26 Ciba Geigy Ag 新規δ−アミノ−γ−ヒドロキシ−ω−アリールアルカン酸アミド
JPH1189178A (ja) 1997-09-08 1999-03-30 Meidensha Corp 電気自動車用インホィールモータ
JPH11115507A (ja) 1997-10-14 1999-04-27 Mitsubishi Automob Eng Co Ltd 電気自動車のモータ取付構造
JPH11170831A (ja) 1997-12-09 1999-06-29 Araco Corp 電気自動車用懸架装置
US6148945A (en) * 1998-05-29 2000-11-21 Carraro S.P.A. Steering drive axle
JP2000052788A (ja) 1998-08-06 2000-02-22 Araco Corp 電動車両
US6225775B1 (en) * 1998-10-01 2001-05-01 Plaset Spa Synchronous electric motor

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7726426B2 (en) * 2003-02-21 2010-06-01 Lockheed Martin Corporation Hub drive and method of using same
US8550192B2 (en) 2003-02-21 2013-10-08 Lockheed Martin Corporation Payload module for mobility assist
US8839891B2 (en) 2003-02-21 2014-09-23 Lockheed Martin Corporation Multi-mode skid steering
US9567005B1 (en) 2003-02-21 2017-02-14 Lockheed Martin Corporation Multi-mode skid steering
US8672065B2 (en) 2003-02-21 2014-03-18 Lockheed Martin Corporation Vehicle having an articulated suspension and method of using same
US20070257570A1 (en) * 2003-08-22 2007-11-08 Magnet-Motor Gesellschaft Fuer Magnetmotorische Te Electric Driving Unit for a Vehicle
US8316973B2 (en) * 2003-08-22 2012-11-27 L-3 Communications Corporation Electric driving unit for a vehicle
US20100300782A1 (en) * 2003-08-22 2010-12-02 Magnet-Motor Gesellschaft Fuer Magnetmotorische Technik Mbh Electric driving unit for a vehicle
US7958959B2 (en) 2004-05-17 2011-06-14 Toyota Jidosha Kabushiki Kaisha Mounting structure for a part provided to an enclosure of an in-wheel motor
US8157036B2 (en) * 2004-05-17 2012-04-17 Aisin Seiki Kabushiki Kaisha Mounting structure of part
US20080093133A1 (en) * 2004-05-17 2008-04-24 Toyota Jidosha Kabushiki Kaisha Mounting Structure Of Part
US7735589B2 (en) 2004-08-25 2010-06-15 Toyota Jidosha Kabushiki Kaisha Housing structure of in-wheel motor
US20060087182A1 (en) * 2004-08-25 2006-04-27 Toyota Jidosha Kabushiki Kaisha Housing structure of in-wheel motor
US7870918B2 (en) * 2005-07-22 2011-01-18 Daimler Ag Drive unit for a motor vehicle
US20080190677A1 (en) * 2005-07-22 2008-08-14 Roland Muller Drive unit for a motor vehicle
US7552787B1 (en) * 2005-10-07 2009-06-30 Williams Kevin R Energy recoverable wheel motor
US20090166111A1 (en) * 2006-01-27 2009-07-02 Toyota Jidosha Kabushiki Kaisha In-wheel motor
US8020653B2 (en) * 2006-01-27 2011-09-20 Toyota Jidosha Kabushiki Kaisha Vibration damping member for in-wheel motor
US7753151B2 (en) 2006-08-31 2010-07-13 American Axle & Manufacturing, Inc. Electric wheel motor assembly
US20080053726A1 (en) * 2006-08-31 2008-03-06 American Axle & Manufacturing, Inc. Electric wheel motor assembly
US20090032321A1 (en) * 2006-08-31 2009-02-05 American Axle & Manufacturing, Inc. Electric wheel motor assembly
US7445067B2 (en) 2006-08-31 2008-11-04 American Axle & Manufacturing, Inc. Electric wheel motor assembly
US7658251B2 (en) 2006-09-20 2010-02-09 James Harry K Direct drive electric traction motor
US20080066980A1 (en) * 2006-09-20 2008-03-20 James Harry K Direct drive electric traction motor
US20100200323A1 (en) * 2007-09-12 2010-08-12 Fumihiro Egawa Work vehicle
US20090215569A1 (en) * 2008-02-26 2009-08-27 Hitachi Construction Machinery Co., Ltd. Travel Assembly
US8100806B2 (en) * 2008-02-26 2012-01-24 Hitachi Construction Machinery Co., Ltd. Travel assembly
CN101549636B (zh) * 2009-05-15 2013-02-20 沈阳罗特自动化技术有限公司 重载伺服车轮组
US20130292994A1 (en) * 2011-01-21 2013-11-07 Ryou Yukishima In-wheel motor drive device
US9340103B2 (en) * 2011-01-21 2016-05-17 Ntn Corporation In-wheel motor drive device
US20140159468A1 (en) * 2011-08-12 2014-06-12 E-Traction Europe B.V. In-wheel motor with brake
US9387758B2 (en) * 2011-08-12 2016-07-12 E-Traction Europe B.V. In-wheel motor with brake
US20140232175A1 (en) * 2011-09-27 2014-08-21 Ken Yamamoto In-wheel motor drive assembly
US9233604B2 (en) * 2011-09-27 2016-01-12 Ntn Corporation In-wheel motor drive assembly
US9561715B2 (en) * 2012-11-16 2017-02-07 Deere & Company Wheel hub with electric motor
US20140139009A1 (en) * 2012-11-16 2014-05-22 Deere & Company Wheel hub with electric motor
US11548337B2 (en) * 2016-09-30 2023-01-10 Ntn Corporation In-wheel motor drive device
US20190232747A1 (en) * 2016-10-17 2019-08-01 Ntn Corporation In-wheel motor drive device
US10792967B2 (en) * 2016-10-17 2020-10-06 Ntn Corporation In-wheel motor drive device
EP4163139A4 (en) * 2020-06-08 2024-07-31 Ntn Toyo Bearing Co Ltd VEHICLE POWER DEVICE AND POWER GENERATOR VEHICLE BEARING
US20230012737A1 (en) * 2021-07-13 2023-01-19 Hyundai Mobis Co., Ltd. Wheel structure including hub bearing and vehicle including the same
WO2024175197A1 (en) * 2023-02-23 2024-08-29 Elaphe Propulsion Technologies Ltd. Symmetric in-wheel electric motor design

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EP1600324A1 (en) 2005-11-30
CN1239337C (zh) 2006-02-01
DE60120499D1 (de) 2006-07-20
DE60124326D1 (de) 2006-12-14
US20040080223A1 (en) 2004-04-29
EP1362736B1 (en) 2006-06-07
EP1362736A4 (en) 2005-08-17
CN1424970A (zh) 2003-06-18
DE60120499T2 (de) 2006-11-16
EP1600324B1 (en) 2006-11-02
JP3440082B2 (ja) 2003-08-25

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